Strange formatting problem in 8.1.4

Hi all,

I've suddenly started experiencing a strange formatting problem in a project I'm working on with 8.1.4. I'm starting to see this:

Then if I format the code again, it lines up correctly:

If I format again, it goes back to the incorrect version. I also see this in Javadoc:

However this doesn't correct with a second format. It does, however, if I hit tab with the cursor on the last line of the doc comment (I use EMACS tab) but then gets screwed up when I next re-format. Strangely, I have it configured to not reformat doc comments.

Any ideas why this might be happening? This is driving me nuts. I've attached my code style settings in case it helps.

Cheers,
Colin